Deye F62: Battery BMS Stopped Charge/Discharge
F62 means the battery's BMS has halted both charging and discharging to protect the battery. It's a broad protection state: the BMS decided conditions aren't safe to keep operating, so it stopped. The right move is to find why the BMS stopped, not to force it back on.
What usually causes F62
- A protection event the BMS latched (temperature, voltage, or current out of range).
- Battery temperature too high or too low for safe charge/discharge.
- A wrong battery profile or settings in the inverter.
- An internal battery condition that needs the manufacturer.
What to do, safely
Before you start Only use the battery's on/off switch and the inverter breakers. Don't touch the battery power terminals.
- Read the battery's own status (display or app) to see what protection it's reporting.
- Check the basics: is the battery very hot or very cold? Extreme temperature is a common reason a BMS pauses.
- Confirm the battery profile in the inverter matches your battery.
- Try one full restart (battery then inverter) once conditions look normal.
- If F62 stays, contact your installer or battery manufacturer. A BMS that won't resume needs proper diagnosis.
When to call a professional
F62 is the battery's own safety system holding the line. If it won't resume after a restart with normal temperature and correct settings, the battery or BMS needs your installer or the manufacturer. Don't override it.
Related Deye codes
FAQ
It happened during a very hot (or very cold) spell.
Temperature is a common trigger. Many batteries pause charge or discharge outside a safe temperature window. Once the battery returns to a normal temperature, it often resumes.
Is my battery dead?
Not necessarily. F62 is a protection state, not a death sentence. But if it won't clear once conditions are normal, the battery or its BMS should be assessed by the maker.
Sources
- Deye Hybrid Inverter User Manual (F62 = battery BMS halted charge/discharge protection).
- Deye dealer technical references; battery manufacturer documentation.
⚠️ Safety disclaimer. Battery systems store large amounts of energy and can carry lethal voltage. This guide covers reading battery status, checking temperature and settings, and a safe restart only. Never touch battery power terminals or open equipment unless qualified. When in doubt, call a licensed installer or your battery manufacturer.